/Engine/Plugins/FX/Niagara/Source/NiagaraEditor/Public/ViewModels/NiagaraEmitterViewModel.h
typedef TMulticastDelegate_TwoParams< void, const [FNiagaraParameterStore](API\Plugins\Niagara\FNiagaraParameterStore) &, const [UNiagaraScript](API\Plugins\Niagara\UNiagaraScript) & > FOnScriptParameterStoreChanged